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动力臂阻力臂怎么画

2025-03-15 13:36:29

推荐回答（1个）

回答1：

先找支点是那一个点，再找出那个是动力那一个是阻力，过支点作动力或阻的垂线，这线在画实线，就是动力臂或阻力臂了，如果力不过长（我们是用线段来表示力的大小的）那就用虚线延长力的方向让刚才的垂线能够与之相交，并画上直角的标志

好评吧。谢了！！祝你学习进步吧。

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